In The Green Ribbon an insurance investigator researches the accidental death of a jockey. His inquiry leads to an illegal gambling organization, as well as the knowledge that the jockeys death was not accidental. He also saves the life of another jockey who has been the victim of a couple of accidents. One of Edgar Wallaces occasional horse racing novels which centers of a betting syndicate involving the jovial Mr. Trigger, the sinister Dr. Blanter, the strange Mr. Goodie, and the slippery disbarred lawyer Rustem. How does the Green Ribbon tipping agency keep on picking winners? Looks like theres dirty work going on at the race track...